Delivery 1 wrote no commit on the key of a pulled-in module, so after the upgrade those modules fell out of SentBuilds. At the start of the lease holder a copy fills every key that names no commit (creating a standing pulled-in key where none stands), overwrites nothing, empties each column it copied, and raises an urgent condition while it fails. Migration 0105 no longer drops node.sent_builds (issue 1112 does).
jschoubben